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1 <br /> 1 � <br /> GEO-PHASE <br /> ENVIRONMENTAL <br /> 1 <br /> 1 <br /> May 20, 1997 <br /> 1 Mr John Urrutia <br /> Bank of Stockton <br />' Post Office Box 1110 <br /> Stockton, Ca 95201 <br />' RE WORKPLAN EMERGENCY REMEDIATION/GW MONITORING WELL INSTALLATION <br /> CUTTER LUMBER SITE-3430&3422 S EL DORADO,STOCKTON <br />' Dear Mr Urrutia <br /> On April 8, 1997, Geo-Phase Environmental Inc submitted to you a report entitled <br /> PrehminaCy Soil and Groundwater Investigation, Cutter Lumber Site That report documents <br /> a field investigation which included the <br /> • Installation of 9 soil borings to the capillary fringe (±35 to 38 feet below grade), <br /> • The collection of soil samples at 5 foot intervals from each of the bonngs and grab <br /> groundwater samples from select borings, <br />' 0 The permitted destruction of three groundwater monitoring wells from the tank associated <br /> with another tank release on site as well as the destruction of a contaminated domestic <br /> well, and <br /> I • Laboratory analysts of selected soil and groundwater samples <br />' Evidence obtained during the investigation suggests that soil and groundwater beneath the <br /> suspected former underground tank location have been impacted by the release of petroleum <br /> hydrocarbons The gasoline range petroleum hydrocarbon concentration to samples collected <br />' from the capillary fringe, would also indicate the presence of floating free product at the <br /> surface of the groundwater Based upon this information, it was recommended to the report <br /> that further remedial and investigatory work be completed at the site <br /> 6I <br /> 7 <br />' 2937 Veneman Ave,#13240 Geo-Phase Environmental Inc Phone(209) 569-0293 <br /> Modesto, CA 95356 Fax(209) 569-0295 <br />